Holmberg IX

Holmberg IX

Holmberg IX Dwarf Galaxy on GALEX, 9′ view
Observation data (2000 epoch)
Right ascension 09h 57m 32.1s [1]
Declination +69° 02′ 46″ [1]
Distance 12 Mly
Type dI [1]
Apparent dimensions (V) 1.41 ± 0.07 [1]
Apparent magnitude (V) 16.5 [1]
Other designations
UGC 5336, [B93] 17, DDO 66, 2E 0953.7+6918, 2E 2199, 1ES 0953+69.3, HIJASS J0957+69A, Holmberg IX, [IW2001] H42, [IW2001] P63, K68 62, LEDA 28757, Mailyan 48, MCG+12-10-012, [MI94] Im 62, SPB 118, PGC 28757
See also: Galaxy, List of galaxies

Holmberg IX is a dwarf irregular galaxy and a satellite galaxy of M81. The galaxy is named after Erik Holmberg who first described it. Based on the observed age distribution of stars it contains it is thought to have formed within the last 200 Myr making it the youngest nearby galaxy.[2] It is also home to one of two newly discovered yellow supergiant eclipsing binary systems.[3][4]

Further reading

External links

References

  1. ^ a b c d e "SIMBAD: UGC 5336". http://simbad3.u-strasbg.fr/sim-id.pl?Ident=UGC%205336. 
  2. ^ Sabbi, E.; Gallagher, J. S.; Smith, L. J.; de Mello, D. F.; Mountain M. (March 2006). "Holmberg IX: The Nearest Young Galaxy". The Astrophysical Journal 676 (2): L113–L117. arXiv:0802.4446. Bibcode 2008ApJ...676L.113S. doi:10.1086/587548. 
  3. ^ "Two new Star Systems are the First of Their kind Ever Found". http://researchnews.osu.edu/archive/superyellow.htm. 
  4. ^ "Two Yellow Supergiant Eclipsing Binary Systems Discovered: First Of Their Kind Ever Found". Scinece Daily. 2008-04-01. http://www.sciencedaily.com/releases/2008/03/080331135542.htm. 

Coordinates: 09h 57m 32.1s, +69° 02′ 46″